Finding the Fourth Proportional to 83,639.71, 115,394.64 and 53,442.68
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Solution
The fourth proportional to 83,639.71, 115,394.64 and 53,442.68 is: 73,732.91
Step by Step Solution
- Step 1: Write the proportion equation
83,639.71 : 115,394.64 = 53,442.68 : x - Step 2: Convert to fraction form
83,639.71/115,394.64 = 53,442.68/x - Step 3: Cross multiply
83,639.71x = 115,394.64 × 53,442.68 - Step 4: Simplify right side
83,639.71x = 6,166,998,819.24 - Step 5: Solve for x
x = 6,166,998,819.24/83,639.71 - Step 6: Final answer
x = 73,732.91
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.